|Brushed (Bush) Finish
||Brushed (Bush) Hammered Finish
||Antique (Leather) Finish
|| River Wash Finish
In impact finishing a strong external force is applied to the stone surface in order to alter and enhance the original surface roughness. Because they produce surface unevenness, these finishes are usually not slippery, but they do get dirty easily.
Brushed (Bush) Finish
Plastic or metal brushes (hence the term brushed) are placed in contact with the surface. A certain force is used with this process which takes away the softest stone parts giving the surface a work look. It has certain similarities to that of a leather/antique finish.
Brush (Bush) Hammered Finish
This finish was the precedent to flaming and water finishing. It has been replaced as the alternatives have proven most cost effective. This finish offers a non-slip surface. It is obtained by the mechanical impact with a multiple pointed tool. The surface becomes undulated with indentations at the points of impact with the bushes then removing the softer stone around the impact points. The surface finish renders the finish lighter in colour than its polished form would take.
This is similar to brush hammered but is achieved with a steel tool of a singular point. This finished surface offers non-slip qualities with the appearance of ancient times. Sometimes it is utilised on part of a surface rather than the whole.
To achieve a sandblasted finish the surface is blasted with a sand jet that can be powered by steam or compressed air. The colour of the material is dull in comparison to its polished form and removes the depth of body of the surface. The material appears to have an almost scratched surface which are not harsh to the touch.
A blowtorch is used on the surface of the stone with gives off a flame of high temperature. Materials with a high mineral content such as granite experience heat shock which causing the crystals to shatter. This surface is then rough to the touch and offers the quality of being non-slippery. This impacts on the colour of the material owing to oxidation. In the case of gold or yellow stones they will often become red or orange for this process.
In simple terms this finish is the opposite of flaming. In flaming the hardest stone parts shatter and be removed, water finishing removes the softer stone parts. A high pressured jet of water is passed over the surface to achieve the desired finish. The appearance looks similar to that of flaming and equally rough to the touch. The material colours are not affected by water finishing and the appearance can be compared to those achieved by polishing. The end resulting material possess the non-slip qualities as per flaming but this avoids the oxidation process thus not affecting the stone colour. This makes this surface finish option preferable to flaming.
Antique (Leather) Finish
Machines that have the appearance of large commercial washing machines are utilised in achieving an antique/leather finish. This is more rotational around smaller items as you cannot place large stone pieces within revolving machinery. In this case brushing (bush) finishing along with acid wash are the methods utilised to achieve the desired surface finish.
River Wash Finish
River wash is quite a new stone finish. River wash is a brushed face of stone that maintains its actual shade and colour. River Wash also provides a slip-resistant surface. Unlike flamed or honed surfaces where the thickness of the material can be varied or the colour can become muted, this look allows for a consistent surface ensuring the thickness will be maintained without compromising the original stones appearance.